Minimum Sizes and Positions Too Small to Sell
Why Polymarket cannot sell very small positions, why Polycopy bots target a share floor and a minimum order, and where those floors actually bind at high prices.
Last updated August 21, 2026
Polymarket's exchange cannot sell a position smaller than 5 shares, at any price. A position under that floor is not lost. It waits for the market to resolve, and it still pays out normally if it wins. The only thing you give up is the option to exit early.
Why bots target a bigger position than the floor
That floor is why Polycopy sizes bot copies the way it does. New bots target at least 8 shares per position, comfortably above the exchange minimum, so the positions they open stay sellable. It is also why every bot order has a $5 minimum. A smaller order could round down into a position too small to ever exit.
The floors only bind at high prices
A flat ticket buys many shares when the price is low and few when it is high. At low prices the share floors never come into play. From around 80¢ upward, the same $5 buys so few shares that the floors start deciding the order size instead of your ticket.
Manual copies follow the market minimum instead
A quick copy from the feed is not bound by the bot floor. It follows the market's own minimum order size, typically around $2, and the copy panel shows the exact minimum before you confirm.